Having "real intelligence" is not a sufficient requirement to decide over which systems are sentient or not e.g. there are very low IQ "real intelligences".

Dictionary defintions serve for a partial understanding but are not enough to understand scientific concepts, especially definitions that are not under scientific consensus. Moreover, current AI systems, including tool-assisted LLMs can satisfy these definitions.

Since you like exercising your brain, I'd recommend reading about sophisms.

Note that I am not asserting that LLMs are sentient, but that your statement is too confident and that the subject requires actual care.